A portrait into the mind of a dry-witted, sexual, angry, porn-watching, grief-riddled woman, trying to make sense of the world. As she hurls herself headlong at modern living, Fleabag is thrown roughly up against the walls of contemporary London, with all its frenetic energy, late nights, and bright lights.

A couple and their children move into a seemingly normal suburban home. When strange events occur, they begin to believe there is something else in the house with them. The presence is about to disrupt their lives in unimaginable ways.